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CommitLineData
5cb5a6ff
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
a7334b09
LP		 3/***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20***/
21
5cb5a6ff 22#include <errno.h>
034c6ed7 23#include <signal.h>
2c4104f0
LP		 24#include <dirent.h>
25#include <unistd.h>
5cb5a6ff 26
87f0e418 27#include "unit.h"
5cb5a6ff
LP		 28#include "service.h"
29#include "load-fragment.h"
30#include "load-dropin.h"
034c6ed7 31#include "log.h"
2c4104f0 32#include "strv.h"
9e2f7c11 33#include "unit-name.h"
4139c1b2 34#include "dbus-service.h"
514f4ef5 35#include "special.h"
398ef8ba 36#include "bus-errors.h"
2c4104f0
LP		 37
38#define COMMENTS "#;\n"
39#define NEWLINES "\n\r"
034c6ed7 40
09cd1ab1
LP		 41typedef enum RunlevelType {
42 RUNLEVEL_UP,
43 RUNLEVEL_DOWN,
fc5df99e 44 RUNLEVEL_SYSINIT
09cd1ab1
LP		 45} RunlevelType;
46
47static const struct {
48 const char *path;
49 const char *target;
50 const RunlevelType type;
51} rcnd_table[] = {
fbe9f3a9 52 /* Standard SysV runlevels */
514f4ef5
LP		 53 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
54 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
fbe9f3a9
LP		 55 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
56 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
57 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
58 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
514f4ef5 59 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN },
fbe9f3a9 60
cfe243e3 61 /* SUSE style boot.d */
fc5df99e 62 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
fbe9f3a9
LP		 63
64 /* Debian style rcS.d */
fc5df99e 65 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
23a177ef
LP		 66};
67
09cd1ab1 68#define RUNLEVELS_UP "12345"
fbe9f3a9
LP		 69/* #define RUNLEVELS_DOWN "06" */
70/* #define RUNLEVELS_BOOT "bBsS" */
09cd1ab1 71
acbb0225 72static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
87f0e418
LP		 73 [SERVICE_DEAD] = UNIT_INACTIVE,
74 [SERVICE_START_PRE] = UNIT_ACTIVATING,
75 [SERVICE_START] = UNIT_ACTIVATING,
76 [SERVICE_START_POST] = UNIT_ACTIVATING,
77 [SERVICE_RUNNING] = UNIT_ACTIVE,
80876c20 78 [SERVICE_EXITED] = UNIT_ACTIVE,
032ff4af 79 [SERVICE_RELOAD] = UNIT_RELOADING,
87f0e418
LP		 80 [SERVICE_STOP] = UNIT_DEACTIVATING,
81 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
82 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
83 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
84 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
85 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
032ff4af 86 [SERVICE_MAINTENANCE] = UNIT_MAINTENANCE,
6124958c 87 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
034c6ed7 88};
5cb5a6ff 89
a16e1123
LP		 90static void service_init(Unit *u) {
91 Service *s = SERVICE(u);
92
93 assert(u);
94 assert(u->meta.load_state == UNIT_STUB);
95
96 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
97 s->restart_usec = DEFAULT_RESTART_USEC;
98 s->timer_watch.type = WATCH_INVALID;
99 s->sysv_start_priority = -1;
100 s->socket_fd = -1;
101
102 exec_context_init(&s->exec_context);
103
104 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
105
106 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
107}
108
5e94833f
LP		 109static void service_unwatch_control_pid(Service *s) {
110 assert(s);
111
112 if (s->control_pid <= 0)
113 return;
114
115 unit_unwatch_pid(UNIT(s), s->control_pid);
116 s->control_pid = 0;
117}
118
119static void service_unwatch_main_pid(Service *s) {
120 assert(s);
121
122 if (s->main_pid <= 0)
123 return;
124
125 unit_unwatch_pid(UNIT(s), s->main_pid);
126 s->main_pid = 0;
127}
128
5925dd3c 129static int service_set_main_pid(Service *s, pid_t pid) {
e55224ca
LP		 130 pid_t ppid;
131
5925dd3c
LP		 132 assert(s);
133
134 if (pid <= 1)
135 return -EINVAL;
136
137 if (pid == getpid())
138 return -EINVAL;
139
e55224ca
LP		 140 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid())
141 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
142 s->meta.id, (unsigned long) pid);
143
5925dd3c
LP		 144 s->main_pid = pid;
145 s->main_pid_known = true;
146
b58b4116
LP		 147 exec_status_start(&s->main_exec_status, pid);
148
5925dd3c
LP		 149 return 0;
150}
151
4f2d528d
LP		 152static void service_close_socket_fd(Service *s) {
153 assert(s);
154
155 if (s->socket_fd < 0)
156 return;
157
158 close_nointr_nofail(s->socket_fd);
159 s->socket_fd = -1;
160}
161
6cf6bbc2
LP		 162static void service_connection_unref(Service *s) {
163 assert(s);
164
165 if (!s->socket)
166 return;
167
168 socket_connection_unref(s->socket);
169 s->socket = NULL;
170}
171
87f0e418
LP		 172static void service_done(Unit *u) {
173 Service *s = SERVICE(u);
44d8db9e
LP		 174
175 assert(s);
176
177 free(s->pid_file);
178 s->pid_file = NULL;
179
2c4104f0
LP		 180 free(s->sysv_path);
181 s->sysv_path = NULL;
182
8309400a
LP		 183 free(s->sysv_runlevels);
184 s->sysv_runlevels = NULL;
185
8c47c732
LP		 186 free(s->status_text);
187 s->status_text = NULL;
188
44d8db9e 189 exec_context_done(&s->exec_context);
e537352b 190 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
44d8db9e
LP		 191 s->control_command = NULL;
192
193 /* This will leak a process, but at least no memory or any of
194 * our resources */
5e94833f
LP		 195 service_unwatch_main_pid(s);
196 service_unwatch_control_pid(s);
44d8db9e 197
05e343b7
LP		 198 if (s->bus_name) {
199 unit_unwatch_bus_name(UNIT(u), s->bus_name);
200 free(s->bus_name);
201 s->bus_name = NULL;
202 }
203
4f2d528d 204 service_close_socket_fd(s);
6cf6bbc2 205 service_connection_unref(s);
4f2d528d 206
acbb0225 207 unit_unwatch_timer(u, &s->timer_watch);
44d8db9e
LP		 208}
209
b7ccee3c
LP		 210static char *sysv_translate_name(const char *name) {
211 char *r;
212
213 if (!(r = new(char, strlen(name) + sizeof(".service"))))
214 return NULL;
215
216 if (startswith(name, "boot."))
217 /* Drop SuSE-style boot. prefix */
218 strcpy(stpcpy(r, name + 5), ".service");
219 else if (endswith(name, ".sh"))
220 /* Drop Debian-style .sh suffix */
221 strcpy(stpcpy(r, name) - 3, ".service");
222 else
223 /* Normal init scripts */
224 strcpy(stpcpy(r, name), ".service");
225
226 return r;
227}
228
229static int sysv_translate_facility(const char *name, char **_r) {
2c4104f0
LP		 230
231 static const char * const table[] = {
6464aa08 232 /* LSB defined facilities */
2c4104f0
LP		 233 "$local_fs", SPECIAL_LOCAL_FS_TARGET,
234 "$network", SPECIAL_NETWORK_TARGET,
235 "$named", SPECIAL_NSS_LOOKUP_TARGET,
236 "$portmap", SPECIAL_RPCBIND_TARGET,
237 "$remote_fs", SPECIAL_REMOTE_FS_TARGET,
238 "$syslog", SPECIAL_SYSLOG_TARGET,
6464aa08
LP		 239 "$time", SPECIAL_RTC_SET_TARGET,
240
241 /* Debian extensions */
242 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
243 "$mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
1e287fe3 244 "$x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE
2c4104f0
LP		 245 };
246
247 unsigned i;
248 char *r;
249
250 for (i = 0; i < ELEMENTSOF(table); i += 2)
251 if (streq(table[i], name)) {
252 if (!(r = strdup(table[i+1])))
253 return -ENOMEM;
254
255 goto finish;
256 }
257
258 if (*name == '$')
259 return 0;
260
b7ccee3c 261 if (!(r = sysv_translate_name(name)))
2c4104f0
LP		 262 return -ENOMEM;
263
264finish:
265
266 if (_r)
267 *_r = r;
268
269 return 1;
270}
271
56d748b4 272static int sysv_fix_order(Service *s) {
2c4104f0
LP		 273 Meta *other;
274 int r;
275
276 assert(s);
277
278 if (s->sysv_start_priority < 0)
279 return 0;
280
23a177ef
LP		 281 /* For each pair of services where at least one lacks a LSB
282 * header, we use the start priority value to order things. */
2c4104f0 283
4cd1fbcc 284 LIST_FOREACH(units_per_type, other, s->meta.manager->units_per_type[UNIT_SERVICE]) {
2c4104f0
LP		 285 Service *t;
286 UnitDependency d;
287
288 t = (Service*) other;
289
290 if (s == t)
291 continue;
292
293 if (t->sysv_start_priority < 0)
294 continue;
295
51a1a79d
LP		 296 /* If both units have modern headers we don't care
297 * about the priorities */
298 if ((!s->sysv_path || s->sysv_has_lsb) &&
299 (!t->sysv_path || t->sysv_has_lsb))
23a177ef
LP		 300 continue;
301
2c4104f0
LP		 302 if (t->sysv_start_priority < s->sysv_start_priority)
303 d = UNIT_AFTER;
304 else if (t->sysv_start_priority > s->sysv_start_priority)
305 d = UNIT_BEFORE;
306 else
307 continue;
308
309 /* FIXME: Maybe we should compare the name here lexicographically? */
310
701cc384 311 if (!(r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
2c4104f0
LP		 312 return r;
313 }
314
315 return 0;
316}
317
318static ExecCommand *exec_command_new(const char *path, const char *arg1) {
319 ExecCommand *c;
320
321 if (!(c = new0(ExecCommand, 1)))
322 return NULL;
323
324 if (!(c->path = strdup(path))) {
325 free(c);
326 return NULL;
327 }
328
329 if (!(c->argv = strv_new(path, arg1, NULL))) {
330 free(c->path);
331 free(c);
332 return NULL;
333 }
334
335 return c;
336}
337
338static int sysv_exec_commands(Service *s) {
339 ExecCommand *c;
340
341 assert(s);
342 assert(s->sysv_path);
343
344 if (!(c = exec_command_new(s->sysv_path, "start")))
345 return -ENOMEM;
346 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
347
348 if (!(c = exec_command_new(s->sysv_path, "stop")))
349 return -ENOMEM;
350 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
351
352 if (!(c = exec_command_new(s->sysv_path, "reload")))
353 return -ENOMEM;
354 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
355
356 return 0;
357}
358
e537352b 359static int service_load_sysv_path(Service *s, const char *path) {
2c4104f0
LP		 360 FILE *f;
361 Unit *u;
362 unsigned line = 0;
363 int r;
364 enum {
365 NORMAL,
366 DESCRIPTION,
367 LSB,
368 LSB_DESCRIPTION
369 } state = NORMAL;
23a177ef
LP		 370
371 assert(s);
372 assert(path);
2c4104f0
LP		 373
374 u = UNIT(s);
375
376 if (!(f = fopen(path, "re"))) {
377 r = errno == ENOENT ? 0 : -errno;
378 goto finish;
379 }
380
2c4104f0
LP		 381 free(s->sysv_path);
382 if (!(s->sysv_path = strdup(path))) {
383 r = -ENOMEM;
384 goto finish;
385 }
386
387 while (!feof(f)) {
388 char l[LINE_MAX], *t;
389
390 if (!fgets(l, sizeof(l), f)) {
391 if (feof(f))
392 break;
393
394 r = -errno;
395 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
396 goto finish;
397 }
398
399 line++;
400
401 t = strstrip(l);
402 if (*t != '#')
403 continue;
404
405 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
406 state = LSB;
23a177ef 407 s->sysv_has_lsb = true;
2c4104f0
LP		 408 continue;
409 }
410
411 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
412 state = NORMAL;
413 continue;
414 }
415
416 t++;
417 t += strspn(t, WHITESPACE);
418
419 if (state == NORMAL) {
420
421 /* Try to parse Red Hat style chkconfig headers */
422
c2b35af6 423 if (startswith_no_case(t, "chkconfig:")) {
2c4104f0 424 int start_priority;
8309400a 425 char runlevels[16], *k;
2c4104f0
LP		 426
427 state = NORMAL;
428
8309400a
LP		 429 if (sscanf(t+10, "%15s %i %*i",
430 runlevels,
431 &start_priority) != 2) {
2c4104f0
LP		 432
433 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
434 continue;
435 }
436
fbe9f3a9
LP		 437 /* A start priority gathered from the
438 * symlink farms is preferred over the
439 * data from the LSB header. */
8309400a 440 if (start_priority < 0 || start_priority > 99)
2c4104f0 441 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
db06e3b6 442 else if (s->sysv_start_priority < 0)
8309400a
LP		 443 s->sysv_start_priority = start_priority;
444
445 char_array_0(runlevels);
446 k = delete_chars(runlevels, WHITESPACE "-");
447
448 if (k[0]) {
449 char *d;
450
451 if (!(d = strdup(k))) {
452 r = -ENOMEM;
453 goto finish;
454 }
455
456 free(s->sysv_runlevels);
457 s->sysv_runlevels = d;
2c4104f0
LP		 458 }
459
ed4c1cc6
LP		 460 } else if (startswith_no_case(t, "description:") &&
461 !u->meta.description) {
2c4104f0
LP		 462
463 size_t k = strlen(t);
464 char *d;
465
466 if (t[k-1] == '\\') {
467 state = DESCRIPTION;
468 t[k-1] = 0;
469 }
470
471 if (!(d = strdup(strstrip(t+12)))) {
472 r = -ENOMEM;
473 goto finish;
474 }
475
476 free(u->meta.description);
477 u->meta.description = d;
478
c2b35af6 479 } else if (startswith_no_case(t, "pidfile:")) {
2c4104f0
LP		 480
481 char *fn;
482
483 state = NORMAL;
484
485 fn = strstrip(t+8);
486 if (!path_is_absolute(fn)) {
487 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
488 continue;
489 }
490
491 if (!(fn = strdup(fn))) {
492 r = -ENOMEM;
493 goto finish;
494 }
495
496 free(s->pid_file);
497 s->pid_file = fn;
498 }
499
500 } else if (state == DESCRIPTION) {
501
502 /* Try to parse Red Hat style description
503 * continuation */
504
505 size_t k = strlen(t);
506 char *d;
507
508 if (t[k-1] == '\\')
509 t[k-1] = 0;
510 else
511 state = NORMAL;
512
513 assert(u->meta.description);
514 if (asprintf(&d, "%s %s", u->meta.description, strstrip(t)) < 0) {
515 r = -ENOMEM;
516 goto finish;
517 }
518
519 free(u->meta.description);
520 u->meta.description = d;
521
522 } else if (state == LSB || state == LSB_DESCRIPTION) {
523
c2b35af6 524 if (startswith_no_case(t, "Provides:")) {
2c4104f0
LP		 525 char *i, *w;
526 size_t z;
527
528 state = LSB;
529
f60f22df 530 FOREACH_WORD_QUOTED(w, z, t+9, i) {
2c4104f0
LP		 531 char *n, *m;
532
533 if (!(n = strndup(w, z))) {
534 r = -ENOMEM;
535 goto finish;
536 }
537
b7ccee3c 538 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 539 free(n);
540
541 if (r < 0)
542 goto finish;
543
544 if (r == 0)
545 continue;
546
bd77d0fc
LP		 547 if (unit_name_to_type(m) == UNIT_SERVICE)
548 r = unit_add_name(u, m);
2c966c03
LP		 549 else
550 r = unit_add_two_dependencies_by_name_inverse(u, UNIT_AFTER, UNIT_REQUIRES, m, NULL, true);
bd77d0fc 551
2c4104f0
LP		 552 free(m);
553
554 if (r < 0)
555 goto finish;
556 }
557
c2b35af6
LP		 558 } else if (startswith_no_case(t, "Required-Start:") ||
559 startswith_no_case(t, "Should-Start:") ||
560 startswith_no_case(t, "X-Start-Before:") ||
561 startswith_no_case(t, "X-Start-After:")) {
2c4104f0
LP		 562 char *i, *w;
563 size_t z;
564
565 state = LSB;
566
f60f22df 567 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
2c4104f0
LP		 568 char *n, *m;
569
570 if (!(n = strndup(w, z))) {
571 r = -ENOMEM;
572 goto finish;
573 }
574
b7ccee3c 575 r = sysv_translate_facility(n, &m);
2c4104f0
LP		 576 free(n);
577
578 if (r < 0)
579 goto finish;
580
581 if (r == 0)
582 continue;
583
c2b35af6 584 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
2c4104f0
LP		 585 free(m);
586
587 if (r < 0)
588 goto finish;
589 }
c2b35af6 590 } else if (startswith_no_case(t, "Default-Start:")) {
8309400a
LP		 591 char *k, *d;
592
593 state = LSB;
594
595 k = delete_chars(t+14, WHITESPACE "-");
596
597 if (k[0] != 0) {
598 if (!(d = strdup(k))) {
599 r = -ENOMEM;
600 goto finish;
601 }
602
603 free(s->sysv_runlevels);
604 s->sysv_runlevels = d;
605 }
2c4104f0 606
ed4c1cc6
LP		 607 } else if (startswith_no_case(t, "Description:") &&
608 !u->meta.description) {
2c4104f0
LP		 609 char *d;
610
ed4c1cc6
LP		 611 /* We use the long description only if
612 * no short description is set. */
613
2c4104f0
LP		 614 state = LSB_DESCRIPTION;
615
616 if (!(d = strdup(strstrip(t+12)))) {
617 r = -ENOMEM;
618 goto finish;
619 }
620
621 free(u->meta.description);
622 u->meta.description = d;
623
ed4c1cc6 624 } else if (startswith_no_case(t, "Short-Description:")) {
2c4104f0
LP		 625 char *d;
626
2c4104f0
LP		 627 state = LSB;
628
629 if (!(d = strdup(strstrip(t+18)))) {
630 r = -ENOMEM;
631 goto finish;
632 }
633
2c4104f0
LP		 634 u->meta.description = d;
635
723c83fd
LP		 636 } else if (startswith_no_case(t, "X-Interactive:")) {
637 int b;
638
639 if ((b = parse_boolean(strstrip(t+14))) < 0) {
640 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
641 continue;
642 }
643
644 if (b)
645 s->exec_context.std_input = EXEC_INPUT_TTY;
646 else
647 s->exec_context.std_input = EXEC_INPUT_NULL;
648
2c4104f0
LP		 649 } else if (state == LSB_DESCRIPTION) {
650
651 if (startswith(l, "#\t") || startswith(l, "# ")) {
652 char *d;
653
654 assert(u->meta.description);
655 if (asprintf(&d, "%s %s", u->meta.description, t) < 0) {
656 r = -ENOMEM;
657 goto finish;
658 }
659
660 free(u->meta.description);
661 u->meta.description = d;
662 } else
663 state = LSB;
664 }
665 }
666 }
667
2c4104f0
LP		 668 if ((r = sysv_exec_commands(s)) < 0)
669 goto finish;
670
a40eb732 671 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
0bc824be
LP		 672 /* If there a runlevels configured for this service
673 * but none of the standard ones, then we assume this
674 * is some special kind of service (which might be
675 * needed for early boot) and don't create any links
676 * to it. */
677
a40eb732 678 s->meta.default_dependencies = false;
09cd1ab1 679
09cd1ab1
LP		 680 /* Don't timeout special services during boot (like fsck) */
681 s->timeout_usec = 0;
a40eb732 682 }
0fd030be 683
80876c20 684 /* Special setting for all SysV services */
1f48cf56 685 s->type = SERVICE_FORKING;
80876c20 686 s->valid_no_process = true;
b29a8e58 687 s->kill_mode = KILL_PROCESS_GROUP;
1f48cf56 688 s->restart = SERVICE_ONCE;
acb591e4 689 s->exec_context.std_output = EXEC_OUTPUT_TTY;
80876c20 690
e537352b 691 u->meta.load_state = UNIT_LOADED;
23a177ef 692 r = 0;
2c4104f0
LP		 693
694finish:
695
696 if (f)
697 fclose(f);
698
699 return r;
700}
701
e537352b 702static int service_load_sysv_name(Service *s, const char *name) {
2c4104f0
LP		 703 char **p;
704
705 assert(s);
706 assert(name);
707
d017c6ca
LP		 708 /* For SysV services we strip the boot. or .sh
709 * prefixes/suffixes. */
710 if (startswith(name, "boot.") ||
711 endswith(name, ".sh.service"))
712 return -ENOENT;
713
4cd1fbcc 714 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
2c4104f0
LP		 715 char *path;
716 int r;
717
718 if (asprintf(&path, "%s/%s", *p, name) < 0)
719 return -ENOMEM;
720
721 assert(endswith(path, ".service"));
722 path[strlen(path)-8] = 0;
723
e537352b 724 r = service_load_sysv_path(s, path);
fbe9f3a9 725
4cd1fbcc 726 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
d017c6ca 727 /* Try Debian style xxx.sh source'able init scripts */
fbe9f3a9
LP		 728 strcat(path, ".sh");
729 r = service_load_sysv_path(s, path);
730 }
731
2c4104f0
LP		 732 free(path);
733
4cd1fbcc 734 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
cfe243e3 735 /* Try SUSE style boot.xxx init scripts */
fbe9f3a9
LP		 736
737 if (asprintf(&path, "%s/boot.%s", *p, name) < 0)
738 return -ENOMEM;
739
740 path[strlen(path)-8] = 0;
741 r = service_load_sysv_path(s, path);
742 free(path);
743 }
744
23a177ef 745 if (r < 0)
2c4104f0 746 return r;
23a177ef 747
4cd1fbcc 748 if ((s->meta.load_state != UNIT_STUB))
23a177ef 749 break;
2c4104f0
LP		 750 }
751
752 return 0;
753}
754
e537352b 755static int service_load_sysv(Service *s) {
2c4104f0
LP		 756 const char *t;
757 Iterator i;
758 int r;
759
5cb5a6ff
LP		 760 assert(s);
761
762 /* Load service data from SysV init scripts, preferably with
763 * LSB headers ... */
764
4cd1fbcc 765 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
2c4104f0
LP		 766 return 0;
767
4cd1fbcc 768 if ((t = s->meta.id))
e537352b 769 if ((r = service_load_sysv_name(s, t)) < 0)
2c4104f0
LP		 770 return r;
771
4cd1fbcc
LP		 772 if (s->meta.load_state == UNIT_STUB)
773 SET_FOREACH(t, s->meta.names, i) {
774 if (t == s->meta.id)
e537352b
LP		 775 continue;
776
777 if ((r == service_load_sysv_name(s, t)) < 0)
23a177ef
LP		 778 return r;
779
4cd1fbcc 780 if (s->meta.load_state != UNIT_STUB)
23a177ef
LP		 781 break;
782 }
2c4104f0
LP		 783
784 return 0;
5cb5a6ff
LP		 785}
786
05e343b7
LP		 787static int service_add_bus_name(Service *s) {
788 char *n;
789 int r;
790
791 assert(s);
792 assert(s->bus_name);
793
794 if (asprintf(&n, "dbus-%s.service", s->bus_name) < 0)
795 return 0;
796
797 r = unit_merge_by_name(UNIT(s), n);
798 free(n);
799
800 return r;
801}
802
243b1432
LP		 803static int service_verify(Service *s) {
804 assert(s);
805
4cd1fbcc 806 if (s->meta.load_state != UNIT_LOADED)
243b1432
LP		 807 return 0;
808
809 if (!s->exec_command[SERVICE_EXEC_START]) {
4cd1fbcc 810 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
243b1432
LP		 811 return -EINVAL;
812 }
813
6cf6bbc2 814 if (s->exec_command[SERVICE_EXEC_START]->command_next) {
4cd1fbcc 815 log_error("%s has more than one ExecStart setting. Refusing.", s->meta.id);
6cf6bbc2
LP		 816 return -EINVAL;
817 }
818
05e343b7 819 if (s->type == SERVICE_DBUS && !s->bus_name) {
4d0e5dbd
LP		 820 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
821 return -EINVAL;
822 }
823
824 if (s->exec_context.pam_name && s->kill_mode != KILL_CONTROL_GROUP) {
825 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
05e343b7
LP		 826 return -EINVAL;
827 }
828
243b1432
LP		 829 return 0;
830}
831
a40eb732
LP		 832static int service_add_default_dependencies(Service *s) {
833 int r;
834
835 assert(s);
836
837 /* Add a number of automatic dependencies useful for the
838 * majority of services. */
839
840 /* First, pull in base system */
841 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
842
843 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
844 return r;
845
846 } else if (s->meta.manager->running_as == MANAGER_SESSION) {
847
848 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
849 return r;
850 }
851
852 /* Second, activate normal shutdown */
853 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
854}
855
e537352b
LP		 856static int service_load(Unit *u) {
857 int r;
858 Service *s = SERVICE(u);
859
860 assert(s);
1e2e8133 861
5cb5a6ff 862 /* Load a .service file */
e537352b 863 if ((r = unit_load_fragment(u)) < 0)
5cb5a6ff
LP		 864 return r;
865
bd77d0fc 866 /* Load a classic init script as a fallback, if we couldn't find anything */
e537352b
LP		 867 if (u->meta.load_state == UNIT_STUB)
868 if ((r = service_load_sysv(s)) < 0)
23a177ef 869 return r;
d46de8a1 870
23a177ef 871 /* Still nothing found? Then let's give up */
e537352b 872 if (u->meta.load_state == UNIT_STUB)
23a177ef 873 return -ENOENT;
034c6ed7 874
23a177ef
LP		 875 /* We were able to load something, then let's add in the
876 * dropin directories. */
877 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
8e274523 878 return r;
23a177ef
LP		 879
880 /* This is a new unit? Then let's add in some extras */
e537352b 881 if (u->meta.load_state == UNIT_LOADED) {
23a177ef
LP		 882 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
883 return r;
884
885 if ((r = unit_add_default_cgroup(u)) < 0)
886 return r;
887
56d748b4 888 if ((r = sysv_fix_order(s)) < 0)
23a177ef 889 return r;
05e343b7
LP		 890
891 if (s->bus_name) {
892 if ((r = service_add_bus_name(s)) < 0)
893 return r;
894
895 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
a40eb732 896 return r;
05e343b7 897 }
c952c6ec
LP		 898
899 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
900 s->notify_access = NOTIFY_MAIN;
a40eb732
LP		 901
902 if (s->type == SERVICE_DBUS || s->bus_name)
903 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_TARGET, NULL, true)) < 0)
904 return r;
905
906 if (s->meta.default_dependencies)
907 if ((r = service_add_default_dependencies(s)) < 0)
908 return r;
8e274523
LP		 909 }
910
243b1432 911 return service_verify(s);
034c6ed7
LP		 912}
913
87f0e418 914static void service_dump(Unit *u, FILE *f, const char *prefix) {
5cb5a6ff 915
5cb5a6ff 916 ServiceExecCommand c;
87f0e418 917 Service *s = SERVICE(u);
47be870b
LP		 918 const char *prefix2;
919 char *p2;
5cb5a6ff
LP		 920
921 assert(s);
922
47be870b
LP		 923 p2 = strappend(prefix, "\t");
924 prefix2 = p2 ? p2 : prefix;
44d8db9e 925
5cb5a6ff 926 fprintf(f,
81a2b7ce
LP		 927 "%sService State: %s\n"
928 "%sPermissionsStartOnly: %s\n"
8e274523 929 "%sRootDirectoryStartOnly: %s\n"
03d6ab85 930 "%sValidNoProcess: %s\n"
50159e6a 931 "%sKillMode: %s\n"
c952c6ec
LP		 932 "%sType: %s\n"
933 "%sNotifyAccess: %s\n",
81a2b7ce
LP		 934 prefix, service_state_to_string(s->state),
935 prefix, yes_no(s->permissions_start_only),
8e274523 936 prefix, yes_no(s->root_directory_start_only),
03d6ab85 937 prefix, yes_no(s->valid_no_process),
50159e6a 938 prefix, kill_mode_to_string(s->kill_mode),
c952c6ec
LP		 939 prefix, service_type_to_string(s->type),
940 prefix, notify_access_to_string(s->notify_access));
5cb5a6ff 941
70123e68
LP		 942 if (s->control_pid > 0)
943 fprintf(f,
bb00e604
LP		 944 "%sControl PID: %lu\n",
945 prefix, (unsigned long) s->control_pid);
70123e68
LP		 946
947 if (s->main_pid > 0)
948 fprintf(f,
bb00e604
LP		 949 "%sMain PID: %lu\n",
950 prefix, (unsigned long) s->main_pid);
70123e68 951
034c6ed7
LP		 952 if (s->pid_file)
953 fprintf(f,
954 "%sPIDFile: %s\n",
955 prefix, s->pid_file);
956
05e343b7
LP		 957 if (s->bus_name)
958 fprintf(f,
959 "%sBusName: %s\n"
960 "%sBus Name Good: %s\n",
961 prefix, s->bus_name,
962 prefix, yes_no(s->bus_name_good));
963
5cb5a6ff
LP		 964 exec_context_dump(&s->exec_context, f, prefix);
965
e537352b 966 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
5cb5a6ff 967
44d8db9e
LP		 968 if (!s->exec_command[c])
969 continue;
970
40d50879 971 fprintf(f, "%s-> %s:\n",
94f04347 972 prefix, service_exec_command_to_string(c));
44d8db9e
LP		 973
974 exec_command_dump_list(s->exec_command[c], f, prefix2);
5cb5a6ff 975 }
44d8db9e 976
2c4104f0
LP		 977 if (s->sysv_path)
978 fprintf(f,
23a177ef
LP		 979 "%sSysV Init Script Path: %s\n"
980 "%sSysV Init Script has LSB Header: %s\n",
981 prefix, s->sysv_path,
982 prefix, yes_no(s->sysv_has_lsb));
2c4104f0
LP		 983
984 if (s->sysv_start_priority >= 0)
985 fprintf(f,
23a177ef 986 "%sSysVStartPriority: %i\n",
2c4104f0
LP		 987 prefix, s->sysv_start_priority);
988
8309400a
LP		 989 if (s->sysv_runlevels)
990 fprintf(f, "%sSysVRunLevels: %s\n",
991 prefix, s->sysv_runlevels);
23a177ef 992
8c47c732
LP		 993 if (s->status_text)
994 fprintf(f, "%sStatus Text: %s\n",
995 prefix, s->status_text);
996
47be870b 997 free(p2);
5cb5a6ff
LP		 998}
999
034c6ed7
LP		 1000static int service_load_pid_file(Service *s) {
1001 char *k;
034c6ed7 1002 int r;
5925dd3c 1003 pid_t pid;
034c6ed7
LP		 1004
1005 assert(s);
1006
1007 if (s->main_pid_known)
1008 return 0;
1009
5e94833f
LP		 1010 assert(s->main_pid <= 0);
1011
034c6ed7
LP		 1012 if (!s->pid_file)
1013 return -ENOENT;
1014
1015 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1016 return r;
1017
5925dd3c
LP		 1018 r = parse_pid(k, &pid);
1019 free(k);
034c6ed7 1020
5925dd3c
LP		 1021 if (r < 0)
1022 return r;
406eaf93 1023
5925dd3c
LP		 1024 if (kill(pid, 0) < 0 && errno != EPERM) {
1025 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1026 (unsigned long) pid, s->pid_file);
b8c597d5
LP		 1027 return -ESRCH;
1028 }
1029
5925dd3c 1030 if ((r = service_set_main_pid(s, pid)) < 0)
16f6025e
LP		 1031 return r;
1032
5925dd3c
LP		 1033 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1034 /* FIXME: we need to do something here */
1035 return r;
034c6ed7
LP		 1036
1037 return 0;
1038}
1039
3e33402a
LP		 1040static int service_get_sockets(Service *s, Set **_set) {
1041 Set *set;
ceee3d82
LP		 1042 Iterator i;
1043 char *t;
3e33402a 1044 int r;
ceee3d82
LP		 1045
1046 assert(s);
3e33402a
LP		 1047 assert(_set);
1048
6cf6bbc2
LP		 1049 if (s->socket_fd >= 0)
1050 return 0;
1051
3e33402a
LP		 1052 /* Collects all Socket objects that belong to this
1053 * service. Note that a service might have multiple sockets
1054 * via multiple names. */
1055
1056 if (!(set = set_new(NULL, NULL)))
1057 return -ENOMEM;
ceee3d82 1058
4cd1fbcc 1059 SET_FOREACH(t, s->meta.names, i) {
ceee3d82
LP		 1060 char *k;
1061 Unit *p;
1062
1063 /* Look for all socket objects that go by any of our
1064 * units and collect their fds */
1065
3e33402a
LP		 1066 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1067 r = -ENOMEM;
1068 goto fail;
1069 }
ceee3d82 1070
4cd1fbcc 1071 p = manager_get_unit(s->meta.manager, k);
ceee3d82
LP		 1072 free(k);
1073
8d567588
LP		 1074 if (!p)
1075 continue;
ceee3d82 1076
3e33402a
LP		 1077 if ((r = set_put(set, p)) < 0)
1078 goto fail;
ceee3d82
LP		 1079 }
1080
3e33402a
LP		 1081 *_set = set;
1082 return 0;
1083
1084fail:
1085 set_free(set);
1086 return r;
1087}
1088
e537352b 1089static int service_notify_sockets_dead(Service *s) {
3e33402a
LP		 1090 Iterator i;
1091 Set *set;
47be870b 1092 Socket *sock;
3e33402a
LP		 1093 int r;
1094
1095 assert(s);
1096
6cf6bbc2
LP		 1097 if (s->socket_fd >= 0)
1098 return 0;
1099
3e33402a 1100 /* Notifies all our sockets when we die */
3e33402a
LP		 1101 if ((r = service_get_sockets(s, &set)) < 0)
1102 return r;
1103
47be870b
LP		 1104 SET_FOREACH(sock, set, i)
1105 socket_notify_service_dead(sock);
3e33402a
LP		 1106
1107 set_free(set);
1108
ceee3d82
LP		 1109 return 0;
1110}
1111
034c6ed7
LP		 1112static void service_set_state(Service *s, ServiceState state) {
1113 ServiceState old_state;
5cb5a6ff
LP		 1114 assert(s);
1115
034c6ed7 1116 old_state = s->state;
5cb5a6ff 1117 s->state = state;
034c6ed7
LP		 1118
1119 if (state != SERVICE_START_PRE &&
1120 state != SERVICE_START &&
1121 state != SERVICE_START_POST &&
1122 state != SERVICE_RELOAD &&
1123 state != SERVICE_STOP &&
1124 state != SERVICE_STOP_SIGTERM &&
1125 state != SERVICE_STOP_SIGKILL &&
1126 state != SERVICE_STOP_POST &&
1127 state != SERVICE_FINAL_SIGTERM &&
1128 state != SERVICE_FINAL_SIGKILL &&
1129 state != SERVICE_AUTO_RESTART)
acbb0225 1130 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1131
7d55e835
LP		 1132 if (state != SERVICE_START &&
1133 state != SERVICE_START_POST &&
034c6ed7
LP		 1134 state != SERVICE_RUNNING &&
1135 state != SERVICE_RELOAD &&
1136 state != SERVICE_STOP &&
1137 state != SERVICE_STOP_SIGTERM &&
1138 state != SERVICE_STOP_SIGKILL)
5e94833f 1139 service_unwatch_main_pid(s);
034c6ed7
LP		 1140
1141 if (state != SERVICE_START_PRE &&
1142 state != SERVICE_START &&
1143 state != SERVICE_START_POST &&
1144 state != SERVICE_RELOAD &&
1145 state != SERVICE_STOP &&
1146 state != SERVICE_STOP_SIGTERM &&
1147 state != SERVICE_STOP_SIGKILL &&
1148 state != SERVICE_STOP_POST &&
1149 state != SERVICE_FINAL_SIGTERM &&
e537352b 1150 state != SERVICE_FINAL_SIGKILL) {
5e94833f 1151 service_unwatch_control_pid(s);
034c6ed7 1152 s->control_command = NULL;
a16e1123 1153 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
e537352b 1154 }
034c6ed7 1155
ceee3d82
LP		 1156 if (state == SERVICE_DEAD ||
1157 state == SERVICE_STOP ||
1158 state == SERVICE_STOP_SIGTERM ||
1159 state == SERVICE_STOP_SIGKILL ||
1160 state == SERVICE_STOP_POST ||
1161 state == SERVICE_FINAL_SIGTERM ||
1162 state == SERVICE_FINAL_SIGKILL ||
18c78fb1 1163 state == SERVICE_MAINTENANCE ||
ceee3d82 1164 state == SERVICE_AUTO_RESTART)
e537352b 1165 service_notify_sockets_dead(s);
ceee3d82 1166
4f2d528d
LP		 1167 if (state != SERVICE_START_PRE &&
1168 state != SERVICE_START &&
6cf6bbc2
LP		 1169 state != SERVICE_START_POST &&
1170 state != SERVICE_RUNNING &&
1171 state != SERVICE_RELOAD &&
1172 state != SERVICE_STOP &&
1173 state != SERVICE_STOP_SIGTERM &&
1174 state != SERVICE_STOP_SIGKILL &&
1175 state != SERVICE_STOP_POST &&
1176 state != SERVICE_FINAL_SIGTERM &&
1177 state != SERVICE_FINAL_SIGKILL &&
4cd1fbcc 1178 !(state == SERVICE_DEAD && s->meta.job)) {
4f2d528d 1179 service_close_socket_fd(s);
6cf6bbc2
LP		 1180 service_connection_unref(s);
1181 }
4f2d528d 1182
e537352b 1183 if (old_state != state)
4cd1fbcc 1184 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
acbb0225
LP		 1185
1186 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
034c6ed7
LP		 1187}
1188
a16e1123
LP		 1189static int service_coldplug(Unit *u) {
1190 Service *s = SERVICE(u);
1191 int r;
1192
1193 assert(s);
1194 assert(s->state == SERVICE_DEAD);
1195
1196 if (s->deserialized_state != s->state) {
1197
1198 if (s->deserialized_state == SERVICE_START_PRE ||
1199 s->deserialized_state == SERVICE_START ||
1200 s->deserialized_state == SERVICE_START_POST ||
1201 s->deserialized_state == SERVICE_RELOAD ||
1202 s->deserialized_state == SERVICE_STOP ||
1203 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1204 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1205 s->deserialized_state == SERVICE_STOP_POST ||
1206 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1207 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
e558336f
LP		 1208 s->deserialized_state == SERVICE_AUTO_RESTART) {
1209
1210 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1211 usec_t k;
1212
1213 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1214
1215 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1216 return r;
1217 }
1218 }
a16e1123
LP		 1219
1220 if ((s->deserialized_state == SERVICE_START &&
1221 (s->type == SERVICE_FORKING ||
8c47c732
LP		 1222 s->type == SERVICE_DBUS ||
1223 s->type == SERVICE_FINISH ||
1224 s->type == SERVICE_NOTIFY)) ||
a16e1123
LP		 1225 s->deserialized_state == SERVICE_START_POST ||
1226 s->deserialized_state == SERVICE_RUNNING ||
1227 s->deserialized_state == SERVICE_RELOAD ||
1228 s->deserialized_state == SERVICE_STOP ||
1229 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1230 s->deserialized_state == SERVICE_STOP_SIGKILL)
1231 if (s->main_pid > 0)
1232 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1233 return r;
1234
1235 if (s->deserialized_state == SERVICE_START_PRE ||
1236 s->deserialized_state == SERVICE_START ||
1237 s->deserialized_state == SERVICE_START_POST ||
1238 s->deserialized_state == SERVICE_RELOAD ||
1239 s->deserialized_state == SERVICE_STOP ||
1240 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1241 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1242 s->deserialized_state == SERVICE_STOP_POST ||
1243 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1244 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1245 if (s->control_pid > 0)
1246 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1247 return r;
1248
1249 service_set_state(s, s->deserialized_state);
1250 }
1251
1252 return 0;
1253}
1254
44d8db9e
LP		 1255static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1256 Iterator i;
1257 int r;
1258 int *rfds = NULL;
1259 unsigned rn_fds = 0;
3e33402a 1260 Set *set;
47be870b 1261 Socket *sock;
44d8db9e
LP		 1262
1263 assert(s);
1264 assert(fds);
1265 assert(n_fds);
1266
6cf6bbc2
LP		 1267 if (s->socket_fd >= 0)
1268 return 0;
1269
3e33402a
LP		 1270 if ((r = service_get_sockets(s, &set)) < 0)
1271 return r;
1272
47be870b 1273 SET_FOREACH(sock, set, i) {
44d8db9e
LP		 1274 int *cfds;
1275 unsigned cn_fds;
1276
47be870b 1277 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
44d8db9e
LP		 1278 goto fail;
1279
1280 if (!cfds)
1281 continue;
1282
1283 if (!rfds) {
1284 rfds = cfds;
1285 rn_fds = cn_fds;
1286 } else {
1287 int *t;
1288
1289 if (!(t = new(int, rn_fds+cn_fds))) {
1290 free(cfds);
1291 r = -ENOMEM;
1292 goto fail;
1293 }
1294
1295 memcpy(t, rfds, rn_fds);
1296 memcpy(t+rn_fds, cfds, cn_fds);
1297 free(rfds);
1298 free(cfds);
1299
1300 rfds = t;
1301 rn_fds = rn_fds+cn_fds;
1302 }
1303 }
1304
1305 *fds = rfds;
1306 *n_fds = rn_fds;
3e33402a
LP		 1307
1308 set_free(set);
1309
44d8db9e
LP		 1310 return 0;
1311
1312fail:
3e33402a 1313 set_free(set);
44d8db9e 1314 free(rfds);
3e33402a 1315
44d8db9e
LP		 1316 return r;
1317}
1318
81a2b7ce
LP		 1319static int service_spawn(
1320 Service *s,
1321 ExecCommand *c,
1322 bool timeout,
1323 bool pass_fds,
1324 bool apply_permissions,
1325 bool apply_chroot,
c952c6ec 1326 bool set_notify_socket,
81a2b7ce
LP		 1327 pid_t *_pid) {
1328
034c6ed7
LP		 1329 pid_t pid;
1330 int r;
6cf6bbc2 1331 int *fds = NULL, *fdsbuf = NULL;
2105e76a
LP		 1332 unsigned n_fds = 0, n_env = 0;
1333 char **argv = NULL, **final_env = NULL, **our_env = NULL;
034c6ed7
LP		 1334
1335 assert(s);
1336 assert(c);
1337 assert(_pid);
1338
6cf6bbc2
LP		 1339 if (pass_fds ||
1340 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1341 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1342 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1343
4f2d528d
LP		 1344 if (s->socket_fd >= 0) {
1345 fds = &s->socket_fd;
1346 n_fds = 1;
6cf6bbc2
LP		 1347 } else {
1348 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1349 goto fail;
1350
1351 fds = fdsbuf;
1352 }
4f2d528d 1353 }
44d8db9e 1354
e558336f 1355 if (timeout && s->timeout_usec) {
acbb0225 1356 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1357 goto fail;
1358 } else
acbb0225 1359 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7 1360
9e2f7c11
LP		 1361 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1362 r = -ENOMEM;
1363 goto fail;
1364 }
1365
2105e76a
LP		 1366 if (!(our_env = new0(char*, 3))) {
1367 r = -ENOMEM;
1368 goto fail;
1369 }
c952c6ec 1370
2105e76a
LP		 1371 if (set_notify_socket)
1372 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=@%s", s->meta.manager->notify_socket) < 0) {
c952c6ec
LP		 1373 r = -ENOMEM;
1374 goto fail;
1375 }
1376
2105e76a
LP		 1377 if (s->main_pid > 0)
1378 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
c952c6ec
LP		 1379 r = -ENOMEM;
1380 goto fail;
1381 }
2105e76a
LP		 1382
1383 if (!(final_env = strv_env_merge(2,
1384 s->meta.manager->environment,
1385 our_env,
1386 NULL))) {
1387 r = -ENOMEM;
1388 goto fail;
1389 }
c952c6ec 1390
9e2f7c11
LP		 1391 r = exec_spawn(c,
1392 argv,
1393 &s->exec_context,
1394 fds, n_fds,
2105e76a 1395 final_env,
9e2f7c11
LP		 1396 apply_permissions,
1397 apply_chroot,
4cd1fbcc
LP		 1398 s->meta.manager->confirm_spawn,
1399 s->meta.cgroup_bondings,
9e2f7c11
LP		 1400 &pid);
1401
9e2f7c11 1402 if (r < 0)
034c6ed7
LP		 1403 goto fail;
1404
4f2d528d 1405
87f0e418 1406 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
034c6ed7
LP		 1407 /* FIXME: we need to do something here */
1408 goto fail;
1409
2105e76a
LP		 1410 free(fdsbuf);
1411 strv_free(argv);
1412 strv_free(our_env);
1413 strv_free(final_env);
1414
034c6ed7
LP		 1415 *_pid = pid;
1416
5cb5a6ff 1417 return 0;
034c6ed7
LP		 1418
1419fail:
2105e76a 1420 free(fdsbuf);
c952c6ec 1421 strv_free(argv);
2105e76a
LP		 1422 strv_free(our_env);
1423 strv_free(final_env);
c952c6ec 1424
034c6ed7 1425 if (timeout)
acbb0225 1426 unit_unwatch_timer(UNIT(s), &s->timer_watch);
034c6ed7
LP		 1427
1428 return r;
1429}
1430
80876c20
LP		 1431static int main_pid_good(Service *s) {
1432 assert(s);
1433
1434 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1435 * don't know */
1436
1437 /* If we know the pid file, then lets just check if it is
1438 * still valid */
1439 if (s->main_pid_known)
1440 return s->main_pid > 0;
1441
1442 /* We don't know the pid */
1443 return -EAGAIN;
1444}
1445
1446static int control_pid_good(Service *s) {
1447 assert(s);
1448
1449 return s->control_pid > 0;
1450}
1451
1452static int cgroup_good(Service *s) {
1453 int r;
1454
1455 assert(s);
1456
4cd1fbcc 1457 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
80876c20
LP		 1458 return r;
1459
1460 return !r;
1461}
1462
034c6ed7
LP		 1463static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1464 int r;
1465 assert(s);
1466
1467 if (!success)
1468 s->failure = true;
1469
1470 if (allow_restart &&
3a762661 1471 s->allow_restart &&
034c6ed7
LP		 1472 (s->restart == SERVICE_RESTART_ALWAYS ||
1473 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
1474
acbb0225 1475 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
034c6ed7
LP		 1476 goto fail;
1477
1478 service_set_state(s, SERVICE_AUTO_RESTART);
1479 } else
18c78fb1 1480 service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
034c6ed7
LP		 1481
1482 return;
1483
1484fail:
4cd1fbcc 1485 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1486 service_enter_dead(s, false, false);
1487}
1488
1489static void service_enter_signal(Service *s, ServiceState state, bool success);
1490
1491static void service_enter_stop_post(Service *s, bool success) {
1492 int r;
1493 assert(s);
1494
1495 if (!success)
1496 s->failure = true;
1497
5e94833f
LP		 1498 service_unwatch_control_pid(s);
1499
a16e1123 1500 s->control_command_id = SERVICE_EXEC_STOP_POST;
80876c20 1501 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
81a2b7ce
LP		 1502 if ((r = service_spawn(s,
1503 s->control_command,
1504 true,
1505 false,
1506 !s->permissions_start_only,
1507 !s->root_directory_start_only,
c952c6ec 1508 false,
81a2b7ce 1509 &s->control_pid)) < 0)
034c6ed7
LP		 1510 goto fail;
1511
d6ea93e3 1512
80876c20
LP		 1513 service_set_state(s, SERVICE_STOP_POST);
1514 } else
1515 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
034c6ed7
LP		 1516
1517 return;
1518
1519fail:
4cd1fbcc 1520 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1521 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1522}
1523
1524static void service_enter_signal(Service *s, ServiceState state, bool success) {
1525 int r;
1526 bool sent = false;
1527
1528 assert(s);
1529
1530 if (!success)
1531 s->failure = true;
1532
80876c20
LP		 1533 if (s->kill_mode != KILL_NONE) {
1534 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
034c6ed7 1535
50159e6a 1536 if (s->kill_mode == KILL_CONTROL_GROUP) {
034c6ed7 1537
4cd1fbcc 1538 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
50159e6a
LP		 1539 if (r != -EAGAIN && r != -ESRCH)
1540 goto fail;
1541 } else
034c6ed7
LP		 1542 sent = true;
1543 }
1544
50159e6a
LP		 1545 if (!sent) {
1546 r = 0;
80876c20 1547
50159e6a
LP		 1548 if (s->main_pid > 0) {
1549 if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
1550 r = -errno;
1551 else
1552 sent = true;
1553 }
1554
1555 if (s->control_pid > 0) {
1556 if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
1557 r = -errno;
1558 else
1559 sent = true;
1560 }
1561
1562 if (r < 0)
1563 goto fail;
1564 }
d6ea93e3 1565 }
034c6ed7 1566
e93bc5a6 1567 if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
e558336f
LP		 1568 if (s->timeout_usec > 0)
1569 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1570 goto fail;
d6ea93e3 1571
80876c20
LP		 1572 service_set_state(s, state);
1573 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1574 service_enter_stop_post(s, true);
1575 else
034c6ed7
LP		 1576 service_enter_dead(s, true, true);
1577
1578 return;
1579
1580fail:
4cd1fbcc 1581 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
034c6ed7 1582
80876c20 1583 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
034c6ed7
LP		 1584 service_enter_stop_post(s, false);
1585 else
1586 service_enter_dead(s, false, true);
1587}
1588
1589static void service_enter_stop(Service *s, bool success) {
1590 int r;
5925dd3c 1591
034c6ed7
LP		 1592 assert(s);
1593
1594 if (!success)
1595 s->failure = true;
1596
5e94833f
LP		 1597 service_unwatch_control_pid(s);
1598
a16e1123 1599 s->control_command_id = SERVICE_EXEC_STOP;
80876c20 1600 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
81a2b7ce
LP		 1601 if ((r = service_spawn(s,
1602 s->control_command,
1603 true,
1604 false,
1605 !s->permissions_start_only,
1606 !s->root_directory_start_only,
c952c6ec 1607 false,
e55224ca 1608 &s->control_pid)) < 0)
034c6ed7
LP		 1609 goto fail;
1610
80876c20
LP		 1611 service_set_state(s, SERVICE_STOP);
1612 } else
034c6ed7
LP		 1613 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1614
1615 return;
1616
1617fail:
4cd1fbcc 1618 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1619 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1620}
1621
80876c20 1622static void service_enter_running(Service *s, bool success) {
4eab639f 1623 int main_pid_ok, cgroup_ok;
80876c20
LP		 1624 assert(s);
1625
1626 if (!success)
1627 s->failure = true;
1628
4eab639f
LP		 1629 main_pid_ok = main_pid_good(s);
1630 cgroup_ok = cgroup_good(s);
1631
1632 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
05e343b7 1633 (s->bus_name_good || s->type != SERVICE_DBUS))
80876c20
LP		 1634 service_set_state(s, SERVICE_RUNNING);
1635 else if (s->valid_no_process)
1636 service_set_state(s, SERVICE_EXITED);
1637 else
1638 service_enter_stop(s, true);
1639}
1640
034c6ed7
LP		 1641static void service_enter_start_post(Service *s) {
1642 int r;
1643 assert(s);
1644
5e94833f
LP		 1645 service_unwatch_control_pid(s);
1646
a16e1123 1647 s->control_command_id = SERVICE_EXEC_START_POST;
80876c20 1648 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
81a2b7ce
LP		 1649 if ((r = service_spawn(s,
1650 s->control_command,
1651 true,
1652 false,
1653 !s->permissions_start_only,
1654 !s->root_directory_start_only,
c952c6ec 1655 false,
e55224ca 1656 &s->control_pid)) < 0)
034c6ed7
LP		 1657 goto fail;
1658
80876c20
LP		 1659 service_set_state(s, SERVICE_START_POST);
1660 } else
1661 service_enter_running(s, true);
034c6ed7
LP		 1662
1663 return;
1664
1665fail:
4cd1fbcc 1666 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1667 service_enter_stop(s, false);
1668}
1669
1670static void service_enter_start(Service *s) {
1671 pid_t pid;
1672 int r;
1673
1674 assert(s);
1675
1676 assert(s->exec_command[SERVICE_EXEC_START]);
1677 assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
1678
80876c20
LP		 1679 if (s->type == SERVICE_FORKING)
1680 service_unwatch_control_pid(s);
1681 else
1682 service_unwatch_main_pid(s);
1683
81a2b7ce
LP		 1684 if ((r = service_spawn(s,
1685 s->exec_command[SERVICE_EXEC_START],
8c47c732 1686 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
81a2b7ce
LP		 1687 true,
1688 true,
1689 true,
c952c6ec 1690 s->notify_access != NOTIFY_NONE,
81a2b7ce 1691 &pid)) < 0)
034c6ed7
LP		 1692 goto fail;
1693
1694 if (s->type == SERVICE_SIMPLE) {
1695 /* For simple services we immediately start
1696 * the START_POST binaries. */
1697
5925dd3c 1698 service_set_main_pid(s, pid);
034c6ed7
LP		 1699 service_enter_start_post(s);
1700
1701 } else if (s->type == SERVICE_FORKING) {
1702
1703 /* For forking services we wait until the start
1704 * process exited. */
1705
a16e1123 1706 s->control_command_id = SERVICE_EXEC_START;
034c6ed7 1707 s->control_command = s->exec_command[SERVICE_EXEC_START];
5925dd3c 1708
e55224ca 1709 s->control_pid = pid;
80876c20
LP		 1710 service_set_state(s, SERVICE_START);
1711
05e343b7 1712 } else if (s->type == SERVICE_FINISH ||
8c47c732
LP		 1713 s->type == SERVICE_DBUS ||
1714 s->type == SERVICE_NOTIFY) {
7d55e835
LP		 1715
1716 /* For finishing services we wait until the start
1717 * process exited, too, but it is our main process. */
1718
05e343b7 1719 /* For D-Bus services we know the main pid right away,
8c47c732
LP		 1720 * but wait for the bus name to appear on the
1721 * bus. Notify services are similar. */
05e343b7 1722
5925dd3c 1723 service_set_main_pid(s, pid);
80876c20 1724 service_set_state(s, SERVICE_START);
034c6ed7
LP		 1725 } else
1726 assert_not_reached("Unknown service type");
1727
1728 return;
1729
1730fail:
4cd1fbcc 1731 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
80876c20 1732 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 1733}
1734
1735static void service_enter_start_pre(Service *s) {
1736 int r;
1737
1738 assert(s);
1739
5e94833f
LP		 1740 service_unwatch_control_pid(s);
1741
a16e1123 1742 s->control_command_id = SERVICE_EXEC_START_PRE;
80876c20 1743 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
81a2b7ce
LP		 1744 if ((r = service_spawn(s,
1745 s->control_command,
1746 true,
1747 false,
1748 !s->permissions_start_only,
1749 !s->root_directory_start_only,
c952c6ec 1750 false,
e55224ca 1751 &s->control_pid)) < 0)
034c6ed7
LP		 1752 goto fail;
1753
80876c20
LP		 1754 service_set_state(s, SERVICE_START_PRE);
1755 } else
034c6ed7
LP		 1756 service_enter_start(s);
1757
1758 return;
1759
1760fail:
4cd1fbcc 1761 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1762 service_enter_dead(s, false, true);
1763}
1764
1765static void service_enter_restart(Service *s) {
1766 int r;
398ef8ba
LP		 1767 DBusError error;
1768
034c6ed7 1769 assert(s);
398ef8ba 1770 dbus_error_init(&error);
034c6ed7 1771
9ea9a0c8
LP		 1772 service_enter_dead(s, true, false);
1773
398ef8ba 1774 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL, NULL)) < 0)
034c6ed7
LP		 1775 goto fail;
1776
4cd1fbcc 1777 log_debug("%s scheduled restart job.", s->meta.id);
034c6ed7
LP		 1778 return;
1779
1780fail:
398ef8ba 1781 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
034c6ed7 1782 service_enter_dead(s, false, false);
398ef8ba
LP		 1783
1784 dbus_error_free(&error);
034c6ed7
LP		 1785}
1786
1787static void service_enter_reload(Service *s) {
1788 int r;
1789
1790 assert(s);
1791
5e94833f
LP		 1792 service_unwatch_control_pid(s);
1793
a16e1123 1794 s->control_command_id = SERVICE_EXEC_RELOAD;
80876c20 1795 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
81a2b7ce
LP		 1796 if ((r = service_spawn(s,
1797 s->control_command,
1798 true,
1799 false,
1800 !s->permissions_start_only,
1801 !s->root_directory_start_only,
c952c6ec 1802 false,
e55224ca 1803 &s->control_pid)) < 0)
034c6ed7
LP		 1804 goto fail;
1805
80876c20
LP		 1806 service_set_state(s, SERVICE_RELOAD);
1807 } else
1808 service_enter_running(s, true);
034c6ed7
LP		 1809
1810 return;
1811
1812fail:
4cd1fbcc 1813 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
034c6ed7
LP		 1814 service_enter_stop(s, false);
1815}
1816
1817static void service_run_next(Service *s, bool success) {
1818 int r;
1819
1820 assert(s);
1821 assert(s->control_command);
1822 assert(s->control_command->command_next);
1823
1824 if (!success)
1825 s->failure = true;
1826
1827 s->control_command = s->control_command->command_next;
1828
5e94833f
LP		 1829 service_unwatch_control_pid(s);
1830
81a2b7ce
LP		 1831 if ((r = service_spawn(s,
1832 s->control_command,
1833 true,
1834 false,
1835 !s->permissions_start_only,
1836 !s->root_directory_start_only,
c952c6ec 1837 false,
e55224ca 1838 &s->control_pid)) < 0)
034c6ed7
LP		 1839 goto fail;
1840
1841 return;
1842
1843fail:
4cd1fbcc 1844 log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r));
034c6ed7 1845
80876c20
LP		 1846 if (s->state == SERVICE_START_PRE)
1847 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1848 else if (s->state == SERVICE_STOP)
1849 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
034c6ed7
LP		 1850 else if (s->state == SERVICE_STOP_POST)
1851 service_enter_dead(s, false, true);
1852 else
1853 service_enter_stop(s, false);
5cb5a6ff
LP		 1854}
1855
87f0e418
LP		 1856static int service_start(Unit *u) {
1857 Service *s = SERVICE(u);
5cb5a6ff
LP		 1858
1859 assert(s);
1860
034c6ed7
LP		 1861 /* We cannot fulfill this request right now, try again later
1862 * please! */
1863 if (s->state == SERVICE_STOP ||
1864 s->state == SERVICE_STOP_SIGTERM ||
1865 s->state == SERVICE_STOP_SIGKILL ||
1866 s->state == SERVICE_STOP_POST ||
1867 s->state == SERVICE_FINAL_SIGTERM ||
1868 s->state == SERVICE_FINAL_SIGKILL)
5cb5a6ff
LP		 1869 return -EAGAIN;
1870
034c6ed7
LP		 1871 /* Already on it! */
1872 if (s->state == SERVICE_START_PRE ||
1873 s->state == SERVICE_START ||
1874 s->state == SERVICE_START_POST)
1875 return 0;
1876
18c78fb1 1877 assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
5cb5a6ff 1878
1e2e8133
LP		 1879 /* Make sure we don't enter a busy loop of some kind. */
1880 if (!ratelimit_test(&s->ratelimit)) {
9e2f7c11 1881 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
d5159713 1882 return -ECANCELED;
1e2e8133
LP		 1883 }
1884
034c6ed7
LP		 1885 s->failure = false;
1886 s->main_pid_known = false;
3a762661 1887 s->allow_restart = true;
034c6ed7
LP		 1888
1889 service_enter_start_pre(s);
1890 return 0;
5cb5a6ff
LP		 1891}
1892
87f0e418
LP		 1893static int service_stop(Unit *u) {
1894 Service *s = SERVICE(u);
5cb5a6ff
LP		 1895
1896 assert(s);
1897
e537352b 1898 /* Cannot do this now */
034c6ed7
LP		 1899 if (s->state == SERVICE_START_PRE ||
1900 s->state == SERVICE_START ||
1901 s->state == SERVICE_START_POST ||
1902 s->state == SERVICE_RELOAD)
1903 return -EAGAIN;
1904
e537352b
LP		 1905 /* Already on it */
1906 if (s->state == SERVICE_STOP ||
1907 s->state == SERVICE_STOP_SIGTERM ||
1908 s->state == SERVICE_STOP_SIGKILL ||
1909 s->state == SERVICE_STOP_POST ||
1910 s->state == SERVICE_FINAL_SIGTERM ||
1911 s->state == SERVICE_FINAL_SIGKILL)
1912 return 0;
1913
034c6ed7
LP		 1914 if (s->state == SERVICE_AUTO_RESTART) {
1915 service_set_state(s, SERVICE_DEAD);
1916 return 0;
1917 }
1918
80876c20 1919 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
5cb5a6ff 1920
3a762661
LP		 1921 /* This is a user request, so don't do restarts on this
1922 * shutdown. */
1923 s->allow_restart = false;
1924
034c6ed7 1925 service_enter_stop(s, true);
5cb5a6ff
LP		 1926 return 0;
1927}
1928
87f0e418
LP		 1929static int service_reload(Unit *u) {
1930 Service *s = SERVICE(u);
034c6ed7
LP		 1931
1932 assert(s);
1933
80876c20 1934 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
034c6ed7
LP		 1935
1936 service_enter_reload(s);
5cb5a6ff
LP		 1937 return 0;
1938}
1939
87f0e418
LP		 1940static bool service_can_reload(Unit *u) {
1941 Service *s = SERVICE(u);
034c6ed7
LP		 1942
1943 assert(s);
1944
1945 return !!s->exec_command[SERVICE_EXEC_RELOAD];
1946}
1947
a16e1123
LP		 1948static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
1949 Service *s = SERVICE(u);
1950
1951 assert(u);
1952 assert(f);
1953 assert(fds);
1954
1955 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
1956 unit_serialize_item(u, f, "failure", yes_no(s->failure));
1957
1958 if (s->control_pid > 0)
5925dd3c 1959 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
a16e1123 1960
5925dd3c
LP		 1961 if (s->main_pid_known && s->main_pid > 0)
1962 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
a16e1123
LP		 1963
1964 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
1965
1966 /* There's a minor uncleanliness here: if there are multiple
1967 * commands attached here, we will start from the first one
1968 * again */
1969 if (s->control_command_id >= 0)
825636e5 1970 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
a16e1123
LP		 1971
1972 if (s->socket_fd >= 0) {
1973 int copy;
1974
1975 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
1976 return copy;
1977
1978 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
1979 }
1980
ecdbca40
LP		 1981 if (s->main_exec_status.pid > 0) {
1982 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
1983
1984 if (s->main_exec_status.start_timestamp.realtime > 0) {
1985 unit_serialize_item_format(u, f, "main-exec-status-start-realtime",
1986 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.realtime);
1987
1988 unit_serialize_item_format(u, f, "main-exec-status-start-monotonic",
1989 "%llu", (unsigned long long) s->main_exec_status.start_timestamp.monotonic);
1990 }
1991
1992 if (s->main_exec_status.exit_timestamp.realtime > 0) {
1993 unit_serialize_item_format(u, f, "main-exec-status-exit-realtime",
1994 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.realtime);
1995 unit_serialize_item_format(u, f, "main-exec-status-exit-monotonic",
1996 "%llu", (unsigned long long) s->main_exec_status.exit_timestamp.monotonic);
1997
1998 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
1999 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2000 }
2001 }
2002
a16e1123
LP		 2003 return 0;
2004}
2005
2006static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2007 Service *s = SERVICE(u);
2008 int r;
2009
2010 assert(u);
2011 assert(key);
2012 assert(value);
2013 assert(fds);
2014
2015 if (streq(key, "state")) {
2016 ServiceState state;
2017
2018 if ((state = service_state_from_string(value)) < 0)
2019 log_debug("Failed to parse state value %s", value);
2020 else
2021 s->deserialized_state = state;
2022 } else if (streq(key, "failure")) {
2023 int b;
2024
2025 if ((b = parse_boolean(value)) < 0)
2026 log_debug("Failed to parse failure value %s", value);
2027 else
2028 s->failure = b || s->failure;
2029 } else if (streq(key, "control-pid")) {
5925dd3c 2030 pid_t pid;
a16e1123 2031
5925dd3c 2032 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 2033 log_debug("Failed to parse control-pid value %s", value);
2034 else
e55224ca 2035 s->control_pid = pid;
a16e1123 2036 } else if (streq(key, "main-pid")) {
5925dd3c 2037 pid_t pid;
a16e1123 2038
5925dd3c 2039 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 2040 log_debug("Failed to parse main-pid value %s", value);
2041 else
5925dd3c 2042 service_set_main_pid(s, (pid_t) pid);
a16e1123
LP		 2043 } else if (streq(key, "main-pid-known")) {
2044 int b;
2045
2046 if ((b = parse_boolean(value)) < 0)
2047 log_debug("Failed to parse main-pid-known value %s", value);
2048 else
2049 s->main_pid_known = b;
2050 } else if (streq(key, "control-command")) {
2051 ServiceExecCommand id;
2052
2053 if ((id = service_exec_command_from_string(value)) < 0)
2054 log_debug("Failed to parse exec-command value %s", value);
2055 else {
2056 s->control_command_id = id;
2057 s->control_command = s->exec_command[id];
2058 }
2059 } else if (streq(key, "socket-fd")) {
2060 int fd;
2061
2062 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2063 log_debug("Failed to parse socket-fd value %s", value);
2064 else {
2065
2066 if (s->socket_fd >= 0)
2067 close_nointr_nofail(s->socket_fd);
2068 s->socket_fd = fdset_remove(fds, fd);
2069 }
ecdbca40
LP		 2070 } else if (streq(key, "main-exec-status-pid")) {
2071 pid_t pid;
2072
2073 if ((r = parse_pid(value, &pid)) < 0)
2074 log_debug("Failed to parse main-exec-status-pid value %s", value);
2075 else
2076 s->main_exec_status.pid = pid;
2077 } else if (streq(key, "main-exec-status-code")) {
2078 int i;
2079
2080 if ((r = safe_atoi(value, &i)) < 0)
2081 log_debug("Failed to parse main-exec-status-code value %s", value);
2082 else
2083 s->main_exec_status.code = i;
2084 } else if (streq(key, "main-exec-status-status")) {
2085 int i;
2086
2087 if ((r = safe_atoi(value, &i)) < 0)
2088 log_debug("Failed to parse main-exec-status-status value %s", value);
2089 else
2090 s->main_exec_status.status = i;
2091 } else if (streq(key, "main-exec-status-start-realtime")) {
2092 uint64_t k;
2093
af2ab1f9 2094 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2095 log_debug("Failed to parse main-exec-status-start-realtime value %s", value);
2096 else
2097 s->main_exec_status.start_timestamp.realtime = (usec_t) k;
2098 } else if (streq(key, "main-exec-status-start-monotonic")) {
2099 uint64_t k;
2100
af2ab1f9 2101 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2102 log_debug("Failed to parse main-exec-status-start-monotonic value %s", value);
2103 else
2104 s->main_exec_status.start_timestamp.monotonic = (usec_t) k;
2105 } else if (streq(key, "main-exec-status-exit-realtime")) {
2106 uint64_t k;
2107
af2ab1f9 2108 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2109 log_debug("Failed to parse main-exec-status-exit-realtime value %s", value);
2110 else
2111 s->main_exec_status.exit_timestamp.realtime = (usec_t) k;
2112 } else if (streq(key, "main-exec-status-exit-monotonic")) {
2113 uint64_t k;
2114
af2ab1f9 2115 if ((r = safe_atou64(value, &k)) < 0)
ecdbca40
LP		 2116 log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value);
2117 else
2118 s->main_exec_status.exit_timestamp.monotonic = (usec_t) k;
a16e1123
LP		 2119 } else
2120 log_debug("Unknown serialization key '%s'", key);
2121
2122 return 0;
2123}
2124
87f0e418
LP		 2125static UnitActiveState service_active_state(Unit *u) {
2126 assert(u);
5cb5a6ff 2127
acbb0225 2128 return state_translation_table[SERVICE(u)->state];
034c6ed7
LP		 2129}
2130
10a94420
LP		 2131static const char *service_sub_state_to_string(Unit *u) {
2132 assert(u);
2133
2134 return service_state_to_string(SERVICE(u)->state);
2135}
2136
701cc384
LP		 2137static bool service_check_gc(Unit *u) {
2138 Service *s = SERVICE(u);
2139
2140 assert(s);
2141
2142 return !!s->sysv_path;
2143}
2144
2145static bool service_check_snapshot(Unit *u) {
2146 Service *s = SERVICE(u);
2147
2148 assert(s);
2149
2150 return !s->got_socket_fd;
2151}
2152
87f0e418
LP		 2153static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2154 Service *s = SERVICE(u);
034c6ed7 2155 bool success;
5cb5a6ff
LP		 2156
2157 assert(s);
034c6ed7
LP		 2158 assert(pid >= 0);
2159
cb8a8f78 2160 success = is_clean_exit(code, status);
034c6ed7
LP		 2161 s->failure = s->failure || !success;
2162
2163 if (s->main_pid == pid) {
2164
b58b4116 2165 exec_status_exit(&s->main_exec_status, pid, code, status);
034c6ed7
LP		 2166 s->main_pid = 0;
2167
8c47c732 2168 if (s->type != SERVICE_FORKING) {
034c6ed7
LP		 2169 assert(s->exec_command[SERVICE_EXEC_START]);
2170 s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
2171 }
2172
9e2f7c11 2173 log_debug("%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 2174
2175 /* The service exited, so the service is officially
2176 * gone. */
2177
2178 switch (s->state) {
2179
2180 case SERVICE_START_POST:
2181 case SERVICE_RELOAD:
2182 case SERVICE_STOP:
2183 /* Need to wait until the operation is
2184 * done */
2185 break;
2186
7d55e835 2187 case SERVICE_START:
c4653a4d
LP		 2188 if (s->type == SERVICE_FINISH) {
2189 /* This was our main goal, so let's go on */
2190 if (success)
2191 service_enter_start_post(s);
2192 else
2193 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2194 break;
2195 } else {
8c47c732 2196 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
7d55e835 2197
c4653a4d
LP		 2198 /* Fall through */
2199 }
7d55e835 2200
034c6ed7 2201 case SERVICE_RUNNING:
80876c20 2202 service_enter_running(s, success);
034c6ed7
LP		 2203 break;
2204
2205 case SERVICE_STOP_SIGTERM:
2206 case SERVICE_STOP_SIGKILL:
2207
2208 if (!control_pid_good(s))
2209 service_enter_stop_post(s, success);
5cb5a6ff 2210
034c6ed7
LP		 2211 /* If there is still a control process, wait for that first */
2212 break;
5cb5a6ff 2213
034c6ed7
LP		 2214 default:
2215 assert_not_reached("Uh, main process died at wrong time.");
2216 }
5cb5a6ff 2217
034c6ed7 2218 } else if (s->control_pid == pid) {
034c6ed7 2219
a16e1123 2220 if (s->control_command)
b58b4116 2221 exec_status_exit(&s->control_command->exec_status, pid, code, status);
a16e1123 2222
034c6ed7
LP		 2223 s->control_pid = 0;
2224
9e2f7c11 2225 log_debug("%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
034c6ed7
LP		 2226
2227 /* If we are shutting things down anyway we
2228 * don't care about failing commands. */
2229
a16e1123 2230 if (s->control_command && s->control_command->command_next && success) {
034c6ed7
LP		 2231
2232 /* There is another command to *
2233 * execute, so let's do that. */
2234
9e2f7c11 2235 log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state));
034c6ed7
LP		 2236 service_run_next(s, success);
2237
80876c20 2238 } else {
034c6ed7
LP		 2239 /* No further commands for this step, so let's
2240 * figure out what to do next */
2241
a16e1123
LP		 2242 s->control_command = NULL;
2243 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2244
9e2f7c11 2245 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
bd982a8b 2246
034c6ed7
LP		 2247 switch (s->state) {
2248
2249 case SERVICE_START_PRE:
2250 if (success)
2251 service_enter_start(s);
2252 else
80876c20 2253 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2254 break;
2255
2256 case SERVICE_START:
2257 assert(s->type == SERVICE_FORKING);
2258
2259 /* Let's try to load the pid
2260 * file here if we can. We
2261 * ignore the return value,
2262 * since the PID file might
2263 * actually be created by a
2264 * START_POST script */
2265
2266 if (success) {
2267 if (s->pid_file)
2268 service_load_pid_file(s);
2269
2270 service_enter_start_post(s);
2271 } else
80876c20 2272 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
034c6ed7
LP		 2273
2274 break;
2275
2276 case SERVICE_START_POST:
2277 if (success && s->pid_file && !s->main_pid_known) {
2278 int r;
2279
2280 /* Hmm, let's see if we can
2281 * load the pid now after the
2282 * start-post scripts got
2283 * executed. */
2284
2285 if ((r = service_load_pid_file(s)) < 0)
4cd1fbcc 2286 log_warning("%s: failed to load PID file %s: %s", s->meta.id, s->pid_file, strerror(-r));
034c6ed7
LP		 2287 }
2288
2289 /* Fall through */
2290
2291 case SERVICE_RELOAD:
80876c20
LP		 2292 if (success)
2293 service_enter_running(s, true);
2294 else
034c6ed7
LP		 2295 service_enter_stop(s, false);
2296
2297 break;
2298
2299 case SERVICE_STOP:
80876c20 2300 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
034c6ed7
LP		 2301 break;
2302
2303 case SERVICE_STOP_SIGTERM:
2304 case SERVICE_STOP_SIGKILL:
2305 if (main_pid_good(s) <= 0)
2306 service_enter_stop_post(s, success);
2307
2308 /* If there is still a service
2309 * process around, wait until
2310 * that one quit, too */
2311 break;
2312
2313 case SERVICE_STOP_POST:
2314 case SERVICE_FINAL_SIGTERM:
2315 case SERVICE_FINAL_SIGKILL:
2316 service_enter_dead(s, success, true);
2317 break;
2318
2319 default:
2320 assert_not_reached("Uh, control process died at wrong time.");
2321 }
2322 }
8c47c732 2323 }
034c6ed7
LP		 2324}
2325
acbb0225 2326static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
87f0e418 2327 Service *s = SERVICE(u);
034c6ed7
LP		 2328
2329 assert(s);
2330 assert(elapsed == 1);
2331
acbb0225 2332 assert(w == &s->timer_watch);
034c6ed7
LP		 2333
2334 switch (s->state) {
2335
2336 case SERVICE_START_PRE:
2337 case SERVICE_START:
9e2f7c11 2338 log_warning("%s operation timed out. Terminating.", u->meta.id);
80876c20
LP		 2339 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2340 break;
2341
034c6ed7
LP		 2342 case SERVICE_START_POST:
2343 case SERVICE_RELOAD:
9e2f7c11 2344 log_warning("%s operation timed out. Stopping.", u->meta.id);
034c6ed7
LP		 2345 service_enter_stop(s, false);
2346 break;
2347
2348 case SERVICE_STOP:
9e2f7c11 2349 log_warning("%s stopping timed out. Terminating.", u->meta.id);
034c6ed7
LP		 2350 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2351 break;
2352
2353 case SERVICE_STOP_SIGTERM:
9e2f7c11 2354 log_warning("%s stopping timed out. Killing.", u->meta.id);
034c6ed7
LP		 2355 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2356 break;
2357
2358 case SERVICE_STOP_SIGKILL:
2359 /* Uh, wie sent a SIGKILL and it is still not gone?
2360 * Must be something we cannot kill, so let's just be
2361 * weirded out and continue */
2362
9e2f7c11 2363 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
034c6ed7
LP		 2364 service_enter_stop_post(s, false);
2365 break;
2366
2367 case SERVICE_STOP_POST:
9e2f7c11 2368 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
034c6ed7
LP		 2369 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2370 break;
2371
2372 case SERVICE_FINAL_SIGTERM:
9e2f7c11 2373 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
034c6ed7
LP		 2374 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2375 break;
2376
2377 case SERVICE_FINAL_SIGKILL:
18c78fb1 2378 log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
034c6ed7
LP		 2379 service_enter_dead(s, false, true);
2380 break;
2381
2382 case SERVICE_AUTO_RESTART:
54165a39 2383 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
034c6ed7
LP		 2384 service_enter_restart(s);
2385 break;
2386
2387 default:
2388 assert_not_reached("Timeout at wrong time.");
2389 }
5cb5a6ff
LP		 2390}
2391
8e274523
LP		 2392static void service_cgroup_notify_event(Unit *u) {
2393 Service *s = SERVICE(u);
2394
2395 assert(u);
2396
9e2f7c11 2397 log_debug("%s: cgroup is empty", u->meta.id);
8e274523
LP		 2398
2399 switch (s->state) {
2400
2401 /* Waiting for SIGCHLD is usually more interesting,
2402 * because it includes return codes/signals. Which is
2403 * why we ignore the cgroup events for most cases,
2404 * except when we don't know pid which to expect the
2405 * SIGCHLD for. */
2406
2407 case SERVICE_RUNNING:
80876c20 2408 service_enter_running(s, true);
8e274523
LP		 2409 break;
2410
2411 default:
2412 ;
2413 }
2414}
2415
c952c6ec 2416static void service_notify_message(Unit *u, pid_t pid, char **tags) {
8c47c732
LP		 2417 Service *s = SERVICE(u);
2418 const char *e;
2419
2420 assert(u);
2421
c952c6ec
LP		 2422 if (s->notify_access == NOTIFY_NONE) {
2423 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2424 u->meta.id, (unsigned long) pid);
2425 return;
2426 }
2427
2428 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2429 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2430 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2431 return;
2432 }
2433
8c47c732
LP		 2434 log_debug("%s: Got message", u->meta.id);
2435
2436 /* Interpret MAINPID= */
2437 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2438 (s->state == SERVICE_START ||
2439 s->state == SERVICE_START_POST ||
2440 s->state == SERVICE_RUNNING ||
2441 s->state == SERVICE_RELOAD)) {
8c47c732 2442
5925dd3c 2443 if (parse_pid(e + 8, &pid) < 0)
8c47c732
LP		 2444 log_warning("Failed to parse %s", e);
2445 else {
2446 log_debug("%s: got %s", u->meta.id, e);
5925dd3c 2447 service_set_main_pid(s, pid);
8c47c732
LP		 2448 }
2449 }
2450
2451 /* Interpret READY= */
2452 if (s->type == SERVICE_NOTIFY &&
2453 s->state == SERVICE_START &&
2454 strv_find(tags, "READY=1")) {
2455 log_debug("%s: got READY=1", u->meta.id);
2456
2457 service_enter_start_post(s);
2458 }
2459
2460 /* Interpret STATUS= */
2461 if ((e = strv_find_prefix(tags, "STATUS="))) {
2462 char *t;
2463
2464 if (!(t = strdup(e+7))) {
2465 log_error("Failed to allocate string.");
2466 return;
2467 }
2468
2469 log_debug("%s: got %s", u->meta.id, e);
2470
2471 free(s->status_text);
2472 s->status_text = t;
2473 }
2474}
2475
2c4104f0 2476static int service_enumerate(Manager *m) {
2c4104f0
LP		 2477 char **p;
2478 unsigned i;
2479 DIR *d = NULL;
2480 char *path = NULL, *fpath = NULL, *name = NULL;
2481 int r;
2482
2483 assert(m);
2484
84e3543e 2485 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
09cd1ab1 2486 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2c4104f0
LP		 2487 struct dirent *de;
2488
2489 free(path);
2490 path = NULL;
09cd1ab1 2491 if (asprintf(&path, "%s/%s", *p, rcnd_table[i].path) < 0) {
2c4104f0
LP		 2492 r = -ENOMEM;
2493 goto finish;
2494 }
2495
2496 if (d)
2497 closedir(d);
2498
2499 if (!(d = opendir(path))) {
2500 if (errno != ENOENT)
2501 log_warning("opendir() failed on %s: %s", path, strerror(errno));
2502
2503 continue;
2504 }
2505
2506 while ((de = readdir(d))) {
6542952f 2507 Unit *service;
db06e3b6 2508 int a, b;
2c4104f0
LP		 2509
2510 if (ignore_file(de->d_name))
2511 continue;
2512
2513 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
2514 continue;
2515
2516 if (strlen(de->d_name) < 4)
2517 continue;
2518
db06e3b6
LP		 2519 a = undecchar(de->d_name[1]);
2520 b = undecchar(de->d_name[2]);
2521
2522 if (a < 0 || b < 0)
2523 continue;
2524
2c4104f0
LP		 2525 free(fpath);
2526 fpath = NULL;
09cd1ab1 2527 if (asprintf(&fpath, "%s/%s/%s", *p, rcnd_table[i].path, de->d_name) < 0) {
2c4104f0
LP		 2528 r = -ENOMEM;
2529 goto finish;
2530 }
2531
2532 if (access(fpath, X_OK) < 0) {
2533
2534 if (errno != ENOENT)
2535 log_warning("access() failed on %s: %s", fpath, strerror(errno));
2536
2537 continue;
2538 }
2539
2540 free(name);
b7ccee3c 2541 if (!(name = sysv_translate_name(de->d_name + 3))) {
2c4104f0
LP		 2542 r = -ENOMEM;
2543 goto finish;
2544 }
2545
398ef8ba 2546 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
fbe9f3a9
LP		 2547 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
2548 continue;
2549 }
2c4104f0 2550
09cd1ab1 2551 if (de->d_name[0] == 'S' &&
fc5df99e 2552 (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT))
fbe9f3a9
LP		 2553 SERVICE(service)->sysv_start_priority =
2554 MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
db06e3b6
LP		 2555
2556 manager_dispatch_load_queue(m);
2557 service = unit_follow_merge(service);
2558
2c4104f0 2559 if (de->d_name[0] == 'S') {
2c4104f0 2560
2c966c03 2561 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
2c4104f0 2562 goto finish;
23a177ef 2563
fc5df99e
LP		 2564 } else if (de->d_name[0] == 'K' &&
2565 (rcnd_table[i].type == RUNLEVEL_DOWN ||
2566 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
6542952f 2567
23a177ef
LP		 2568 /* We honour K links only for
2569 * halt/reboot. For the normal
2570 * runlevels we assume the
2571 * stop jobs will be
2572 * implicitly added by the
6542952f
LP		 2573 * core logic. Also, we don't
2574 * really distuingish here
2575 * between the runlevels 0 and
2576 * 6 and just add them to the
fc5df99e
LP		 2577 * special shutdown target. On
2578 * SUSE the boot.d/ runlevel
2579 * is also used for shutdown,
2580 * so we add links for that
2581 * too to the shutdown
2582 * target.*/
6542952f 2583
2c966c03 2584 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
2c4104f0
LP		 2585 goto finish;
2586 }
2587 }
2588 }
2589
2590 r = 0;
2591
2592finish:
2593 free(path);
2594 free(fpath);
2595 free(name);
fbe9f3a9
LP		 2596
2597 if (d)
2598 closedir(d);
2c4104f0
LP		 2599
2600 return r;
2601}
2602
05e343b7
LP		 2603static void service_bus_name_owner_change(
2604 Unit *u,
2605 const char *name,
2606 const char *old_owner,
2607 const char *new_owner) {
2608
2609 Service *s = SERVICE(u);
2610
2611 assert(s);
2612 assert(name);
2613
2614 assert(streq(s->bus_name, name));
2615 assert(old_owner || new_owner);
2616
2617 if (old_owner && new_owner)
2618 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
2619 else if (old_owner)
2620 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
2621 else
2622 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
2623
2624 s->bus_name_good = !!new_owner;
2625
2626 if (s->type == SERVICE_DBUS) {
2627
2628 /* service_enter_running() will figure out what to
2629 * do */
2630 if (s->state == SERVICE_RUNNING)
2631 service_enter_running(s, true);
2632 else if (s->state == SERVICE_START && new_owner)
2633 service_enter_start_post(s);
2634
2635 } else if (new_owner &&
2636 s->main_pid <= 0 &&
2637 (s->state == SERVICE_START ||
2638 s->state == SERVICE_START_POST ||
2639 s->state == SERVICE_RUNNING ||
2640 s->state == SERVICE_RELOAD)) {
2641
2642 /* Try to acquire PID from bus service */
2643 log_debug("Trying to acquire PID from D-Bus name...");
2644
2645 bus_query_pid(u->meta.manager, name);
2646 }
2647}
2648
2649static void service_bus_query_pid_done(
2650 Unit *u,
2651 const char *name,
2652 pid_t pid) {
2653
2654 Service *s = SERVICE(u);
2655
2656 assert(s);
2657 assert(name);
2658
2659 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
2660
2661 if (s->main_pid <= 0 &&
2662 (s->state == SERVICE_START ||
2663 s->state == SERVICE_START_POST ||
2664 s->state == SERVICE_RUNNING ||
2665 s->state == SERVICE_RELOAD))
5925dd3c 2666 service_set_main_pid(s, pid);
05e343b7
LP		 2667}
2668
6cf6bbc2 2669int service_set_socket_fd(Service *s, int fd, Socket *sock) {
4f2d528d
LP		 2670 assert(s);
2671 assert(fd >= 0);
2672
2673 /* This is called by the socket code when instantiating a new
2674 * service for a stream socket and the socket needs to be
2675 * configured. */
2676
4cd1fbcc 2677 if (s->meta.load_state != UNIT_LOADED)
4f2d528d
LP		 2678 return -EINVAL;
2679
2680 if (s->socket_fd >= 0)
2681 return -EBUSY;
2682
2683 if (s->state != SERVICE_DEAD)
2684 return -EAGAIN;
2685
2686 s->socket_fd = fd;
701cc384 2687 s->got_socket_fd = true;
6cf6bbc2
LP		 2688 s->socket = sock;
2689
4f2d528d
LP		 2690 return 0;
2691}
2692
94f04347
LP		 2693static const char* const service_state_table[_SERVICE_STATE_MAX] = {
2694 [SERVICE_DEAD] = "dead",
2695 [SERVICE_START_PRE] = "start-pre",
2696 [SERVICE_START] = "start",
2697 [SERVICE_START_POST] = "start-post",
2698 [SERVICE_RUNNING] = "running",
80876c20 2699 [SERVICE_EXITED] = "exited",
94f04347
LP		 2700 [SERVICE_RELOAD] = "reload",
2701 [SERVICE_STOP] = "stop",
2702 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
2703 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
2704 [SERVICE_STOP_POST] = "stop-post",
2705 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
2706 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
18c78fb1 2707 [SERVICE_MAINTENANCE] = "maintenance",
94f04347
LP		 2708 [SERVICE_AUTO_RESTART] = "auto-restart",
2709};
2710
2711DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
2712
2713static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
2714 [SERVICE_ONCE] = "once",
2715 [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
40531a55 2716 [SERVICE_RESTART_ALWAYS] = "restart-always",
94f04347
LP		 2717};
2718
2719DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
2720
2721static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
94f04347 2722 [SERVICE_SIMPLE] = "simple",
0d624a78 2723 [SERVICE_FORKING] = "forking",
05e343b7 2724 [SERVICE_FINISH] = "finish",
8c47c732
LP		 2725 [SERVICE_DBUS] = "dbus",
2726 [SERVICE_NOTIFY] = "notify"
94f04347
LP		 2727};
2728
2729DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
2730
e537352b 2731static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
94f04347
LP		 2732 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
2733 [SERVICE_EXEC_START] = "ExecStart",
2734 [SERVICE_EXEC_START_POST] = "ExecStartPost",
2735 [SERVICE_EXEC_RELOAD] = "ExecReload",
2736 [SERVICE_EXEC_STOP] = "ExecStop",
2737 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
2738};
2739
2740DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
2741
c952c6ec
LP		 2742static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
2743 [NOTIFY_NONE] = "none",
2744 [NOTIFY_MAIN] = "main",
2745 [NOTIFY_ALL] = "all"
2746};
2747
2748DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
2749
87f0e418 2750const UnitVTable service_vtable = {
5cb5a6ff 2751 .suffix = ".service",
9e58ff9c 2752 .show_status = true,
5cb5a6ff 2753
034c6ed7
LP		 2754 .init = service_init,
2755 .done = service_done,
a16e1123
LP		 2756 .load = service_load,
2757
2758 .coldplug = service_coldplug,
034c6ed7 2759
5cb5a6ff
LP		 2760 .dump = service_dump,
2761
2762 .start = service_start,
2763 .stop = service_stop,
2764 .reload = service_reload,
2765
034c6ed7
LP		 2766 .can_reload = service_can_reload,
2767
a16e1123
LP		 2768 .serialize = service_serialize,
2769 .deserialize_item = service_deserialize_item,
2770
5cb5a6ff 2771 .active_state = service_active_state,
10a94420 2772 .sub_state_to_string = service_sub_state_to_string,
5cb5a6ff 2773
701cc384
LP		 2774 .check_gc = service_check_gc,
2775 .check_snapshot = service_check_snapshot,
2776
034c6ed7
LP		 2777 .sigchld_event = service_sigchld_event,
2778 .timer_event = service_timer_event,
2c4104f0 2779
8e274523 2780 .cgroup_notify_empty = service_cgroup_notify_event,
8c47c732 2781 .notify_message = service_notify_message,
8e274523 2782
05e343b7
LP		 2783 .bus_name_owner_change = service_bus_name_owner_change,
2784 .bus_query_pid_done = service_bus_query_pid_done,
2785
4139c1b2
LP		 2786 .bus_message_handler = bus_service_message_handler,
2787
2c4104f0 2788 .enumerate = service_enumerate
5cb5a6ff 2789};
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